We present a redshift z = 6.535 galaxy discovered by its Lyman- \alpha emission in a 9180Å narrowband image from the Large Area Lyman Alpha ( LALA ) survey .
The Lyman- \alpha line luminosity ( 1.1 \times 10 ^ { 43 } { erg s ^ { -1 } } ) is among the largest known for star forming galaxies at z \approx 6.5 .
The line shows the distinct asymmetry that is characteristic of high-redshift Lyman- \alpha .
The 2 \sigma lower bound on the observer-frame equivalent width is > 530 Å .
This is hard to reconcile with a neutral intergalactic medium unless the Lyman- \alpha line is intrinsically strong and is emitted from its host galaxy with an intrinsic Doppler shift of several hundred km s ^ { -1 } .
If the IGM is ionized , it corresponds to a rest frame equivalent width > 40 Å after correcting for Lyman- \alpha forest absorption .
We also present complete spectroscopic followup of the remaining candidates with line flux > 2 \times 10 ^ { -17 } { erg cm ^ { -2 } s ^ { -1 } } in our 1200 \Box ^ { \prime } narrowband image .
These include another galaxy with a strong emission line at 9136 Å and no detected continuum flux , which however is most likely an [ O iii ] \lambda 5007 source at z = 0.824 based on a weak detection of the [ O iii ] \lambda 4959 line .